text: from rest_framework import permissions
  
  
  class IsOwnerOrReadOnly(permissions.BasePermission):
      """
      Custom permission to only allow owners of an object to edit it.
      """
  
      def has_object_permission(self, request, view, obj):
          # Read permissions are allowed to any request,
          # so we'll always allow GET, HEAD or OPTIONS requests.
          if request.method in permissions.SAFE_METHODS:
              return True
  
          # Write permissions are only allowed to the owner of the order.
          return obj.client == request.user
  